﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;

namespace SoundApplication
{
    class Class1
    {
        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool Beep(int frequency, int duration);
        Form1 form=new Form1();
        
    }
}
